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How To Install A Trailer Brake Controller On A Tow Vehicle

Electric brake controls are designed to apply the brakes of the vehicle's towed trailer. A signal is sent to the trailer's brake magnet or actuator when you apply the tow vehicle's brake pedal. The more power / voltage applied to the electromagnets, the greater the braking force.

There are three basic types of brake controls on the market today which are a timed style, inertia style, and proportional. The wiring diagram to the right is a basic brake controller hook up. The wiring harness shown is typical of any electric brake control installation.

Some newer vehicles provide their own brake control jumper harness which makes the install a plug and play affair. When you purchase a brake controller and install it on a vehicle without a factory installed tow package, a circuit breaker is needed but usually not supplied in the kit. 20 amp / 30 amp circuit breakers are suggested for 2 and 4 brake systems. 40 amp for 6 and 8 brake systems. Always check your installation instructions of the trailer brake control you are installing. Damage can occur from improper wiring connections.

electric trailer brake controller wiring

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